SpringBoot 定时任务 多线程启动

1.实现SchedulingConfigurer接口，重写方法

@Configuration
public class ScheduleConfig implements SchedulingConfigurer {
    @Override
    public void configureTasks(ScheduledTaskRegistrar registrar) {
        registrar.setScheduler(Executors.newScheduledThreadPool(10));
    }
}

定时任务的方法依旧按照单线程的配置即可：
 

@PostConstruct
@Scheduled(cron = "0/4 * * * * ?")
public void testMultithreadingTaskByOverrideConfigureTasks() {
    logger.info("线程名字:{}",Thread.currentThread().getName());
}

2.添加task配置

@Configuration
@EnableAsync
public class AsyncConfig {

    private final int corePoolSize = 10;
    private final int maxPoolSize = 20;
    private final int queueCapacity = 10;

    @Bean
    public Executor taskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(corePoolSize);
        executor.setMaxPoolSize(maxPoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.initialize();
        return executor;
    }
}

定时任务需要在原来单线程的基础上增加 @Async 注解：

@PostConstruct
@Scheduled(cron = "0/4 * * * * ?")
@Async
public void testMultithreadingTaskByAddTaskConfig() {
    logger.info("线程名字:{}",Thread.currentThread().getName());
}

注：两种方法均测试通过，并且实现定时任务需要在启动类中增加 @EnableScheduling 注解